Malicious PDF — malware analysis report

Static analysis result for SHA-256 47cd79d19ee4f15e…

MALICIOUS

PDF

35.6 KB Created: 2021-05-17 23:01:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6cf0e3d9078ee1228a4e9e8c55f18d8c SHA-1: 57364a8ec753a6b826125bc9379ee3df1ab20bd2 SHA-256: 47cd79d19ee4f15ed83b66b85eaf0f48e0c4c8193f9431d34d57d3bcb89f690d
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that point to a malicious redirector, disguised as a 'free generator' for a popular game. The document body explicitly mentions 'Earn Free Robux For Roblox' and includes a call to action to access a generator, indicating a phishing or scam attempt. The presence of a known malicious redirector URL confirms the malicious intent.

Machine Learning

  • Nyx PDF Classifier clean score 0.0265

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/431946152/earn-free-robux-for-roblox-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00003119.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3119 24476 bytes
SHA-256: d827cd8c54efff8a631bf869d481fced5147309d354ecb196b6b3105fb67a1b4
font_01_sfnt_off00006989.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6989 18316 bytes
SHA-256: 81577c12f28394e63c3fe269139937f952c5f2f271c4ac7315843a65914bc4b9

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